Oracle database, a relational database management system (RDBMS) from the Oracle Corporation, is one of the most trusted and widely-used relational database engines. Oracle is a fully scalable relational database architecture used by global enterprises, which manage and process data across wide and local area networks.
MySQL is the world’s second most widely used open-source relational database management system. Where SQL stands for Structured Query Language, “My” is the name of co-founder Michael Widenius’s daughter.
Firebird is a relational database offering many ANSI SQL standard features that run on Windows, Linux, UNIX and a variety of platforms. It offers excellent concurrency, high performance, and powerful language support for stored procedures and triggers. Believe it or not, it dates back to as long as 1981 where it has been used in production systems, under a variety of names.